Which chemical law proposes that soft drinks and soda bottles are sealed under high pressure to increase the solubility of CO2 ?
A. Raoult's Law
B. Henry's Law
C. Ohm's Law
D. Dalton's Law
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Which one of the following is an example of a gel?
A. Cheese
B. Milk
C. Face cream
D. Shaving cream
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. . . . . . . . are homogeneousmixtures of two or more components.
A. Amalgams
B. Solutions
C. Enzymes
D. Emulsions
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Which of the following is a super cooled liquid?
A. Ice-cream
B. Ammonia
C. Glass
D. Wood
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Which one of the following statements is incorrect?
A. The measurable unit of pressure is denoted in metre
B. Matter is made up of small particles
C. Evaporation causes cooling
D. Brass is a mixture of 30% zinc and 70% copper
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Smoke is formed due to
A. solid dispersed in gas
B. solid dispersed in liquid
C. gas dispersed in solid
D. gas dispersed in gas
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Some of the following properties are transport properties.
1. Viscosity
2. Surface tension
3. Thermal conductance
4. Diffusion
Select the correct alternate of transport properties.
A. 1, 2, 3, 4
B. 1, 3, 4
C. 1, 3
D. 3, 4
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The joint process of vaporisation and condensation is called
A. sublimation
B. chromatography
C. distillation
D. crystallisation
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A substance which readily forms colloidal solution in contact with water is called
A. extrinsic colloid
B. associated colloid
C. hydrophobic colloid
D. hydrophilic colloid
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When pure water boils vigorously, the bubbles that rise to the surface are composed primarily of
A. air
B. hydrogen
C. hydrogen and oxygen
D. water vapour
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Creation of something from nothing is against the law of
A. Constant proportions
B. Conservation of mass energy
C. Multiple proportion
D. Reciprocal Proportions
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Assertion (A ) All liquids are conductors of electricity.
Reason (R) Under the condition of low pressure and high voltage, liquids can be made conducting.
A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true, but R is not the correct explanation of A
C. A is true, but R is false
D. A is false, but R is true
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Which of the following gases will have the highest rate of diffusion?
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Consider the following statements.
1. When evaporation takes place, cooling takes place.
2. Evaporation takes place at all temperature, boiling takes place only at the boiling point.
3. Evaporation is a surface phenomenon.
Which of the statements given above is/are true?
A. Only 1
B. 1 and 2
C. 2 and 3
D. 1, 2 and 3
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The temperature of a place on one sunny day is 113 in Fahrenheit scale. The Kelvin scale reading of this temperature will be
A. 318 K
B. 45 K
C. 62.8 K
D. 335.8 K
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Which one of the following is used as an anti-freezer, which effectively depresses the freezing point of water in an automobile?
A. Ethylene glycol
B. Propanoic acid
C. Glutamic acid
D. Glycolic acid
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Consider the following statements.
1. A real gas can be approximated as an ideal gas when it is highly dilute.
2. Only monoatomic gases can be approximated as ideal gases.
3. An ideal gas does not undergo phase transitions.
Which of the above statements are correct?
A. 1 and 2
B. 1 and 3
C. 2 and 3
D. 1, 2 and 3
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When a gas is compressed at constant temperature
A. the speeds of the molecules decreases
B. the speeds of themolecules increaser
C. the collisions between the molecules increase
D. the collisions between the molecules decrease
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Air at sea level is found to be dense. This is in accordance with
A. Boyle's Law
B. Charle's Law
C. Dalton's Law
D. Avogadro's Law
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30°C = Kelvin (approximately)
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